BQ27545 The Texas Instruments BQ27545 is a single-cell battery fuel gauge designed for Li-Ion and Li-Polymer batteries. It features the Impedance Track™ algorithm for accurate fuel gauging.
Mfr Part #:

BQ27545

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BQ27545 is a single-cell battery fuel gauge designed for Li-Ion and Li-Polymer batteries. It features the Impedance Track™ algorithm for accurate fuel gauging.
✓ Total Stock: 7,335 pcs
$ Price Range: $0.75

BQ27545 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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7,335 pcs
7335 pcs On Request 1 On Request On Request On Request On Request On Request

BQ27545 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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BQ27545 Description

Short technical summary and product information.

The Texas Instruments BQ27545 is a pack-side, single-cell battery fuel gauge utilizing the patented Impedance Track™ technology. It is suitable for Li-Ion and Li-Polymer battery chemistries and supports a capacity range from 300 mAh to 16000 mAh.

 

Key features include SHA-1 authentication, an operating temperature range of -40°C to 85°C, and communication via HDQ or I2C interfaces. The device supports a low-value sense resistor (5 mΩ to 20 mΩ) and provides advanced fuel gauging capabilities such as modeling battery discharge curves for accurate time-to-empty predictions. It automatically adjusts for battery aging, self-discharge, and temperature inefficiencies.

 

The BQ27545 is available in a compact 15-ball Nano-Free™ (DSBGA) package, making it ideal for battery pack integration where space is a constraint. It also offers features like internal or external temperature sensor reporting, lifetime data logging, and 64 bytes of non-volatile scratch pad FLASH memory.

BQ27545 Quick Information

Product Type: Battery Fuel Gauge
Canonical Name: BQ27545 Single-Cell Li-Ion Battery Fuel Gauge
Subcategory: Battery Management ICs

BQ27545 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BQ27545 Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

BQ27545 Features

  • Single-cell Li-Ion/Li-Polymer fuel gauge.
  • Utilizes Impedance Track™ algorithm.
  • Supports SHA-1 Authentication.
  • Wide operating temperature range.
  • Compact DSBGA package.

BQ27545 Applications

  • Accurate battery fuel gauging.
  • Battery pack integration.
  • Portable electronic devices.
  • Power management systems.

BQ27545 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the cell chemistry supported by the BQ27545?

The BQ27545 supports Li-Ion/Li-Polymer cell chemistry.

How many series cells does the BQ27545 support?

The BQ27545 supports a single series cell.

What communication interfaces are available on the BQ27545?

The BQ27545 features HDQ and I2C communication interfaces.

What is the minimum and maximum battery capacity for the BQ27545?

The BQ27545 supports a minimum battery capacity of 300 mAh and a maximum of 16000 mAh.

What are the key features of the BQ27545 fuel gauge?

Key features include the Impedance Track™ algorithm and SHA-1 Authentication.

What is the operating temperature range for the BQ27545?

The BQ27545 operates within a temperature range of -40°C to 85°C.

What is the package type for the BQ27545?

The BQ27545 is available in a DSBGA (YZF) package.

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